package org.eoti.rei.ndfcmd;

/**
 * The MIT License
 * <p/>
 * Copyright (c) 2009 Malachi de AElfweald (malachid@gmail.com)
 * <p/>
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 * <p/>
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
 * Software.
 * <p/>
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
import java.util.*;

public class HelpCmd
	extends NDFBrowserCommand
{
	public String[] commands()
	{
		return new String[]{"help","?"};
	}

	public void process( List<String> commandLine)
			throws Exception
	{
		if(commandLine.size() == 0)
		{
			displayHelp();
			return;
		}

		String cmd = commandLine.get(0).toLowerCase();
		NDFBrowserCommand command = browser.commands().get(cmd);
		if(command == null)
		{
			format("Help not found: %s\n", cmd);
		}else{
			command.displayHelp();
		}
	}

	public void displayHelp()
	{
		TreeSet<String> tree = new TreeSet<String>(browser.commands().keySet());
		for(String cmd : tree)
			format("%s, ", cmd);
	}
}
